Electrical Engineering Interview Questions
Questions Answers Views Company eMail

In the Load Test of 3 Phase Squirrel Cage Induction Motor, 2 wattmeters are used. One of the wattmeter deflects in negative diretion during no load. Why?

CAT,

1 8368

How to design the blower for motor? how to two blowers connected in motor?

Ashok Leyland, TATA,

1 3566

what is Diversity factor in electrical installations

3 13700

how to decide the ratings of the MCCB,MCB in electrification.give me the proper thumb rule or procedure.

ABB,

2777

how to decide the ratings of the busbar in electrification.give me the proper thumb rule or procedure

ABB,

1 4065

why excitor coil of an alternator can fail

3 4767

66kv under ground cable how to layaing in ground any special case two ckt r runing

1510

From an electrical motor & electrical generator, which has more efficiency & why?

Sahi,

1 2210

why we change the direction of winding in rotor ?how we make the north and south pole?

1565

why we r using alternator instead of d.c generator and induction generator

1 2991

why alternator is used instead of dc generator and induction generator

1 3000

what is the full form of KVAR

6 31742

what is ripple ??? what is harmonics ?

ABB,

3 12254

how much current in live 11 Kv distribution Line?

ABB,

1 4824

If we give 2334 A, 540V on Primary side of 1.125 MVA step up transformer, then what will be the Secondary Current, If Secondary Voltage=11 KV?

L&T,

3 6381


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Un-Answered Questions { Electrical Engineering }

What is the Difference between Ac Drives and Dc Drives? According to application, speed, Torque, cost, Reliability, Construction, Motor etc... Thankyou !!!

1652


At what speed an electric car can run with 2 HP motor of weighing 400 kg?

1280


how to calculate the breaking capacity of different breakers.

1671


Dear all i am kumaravel. now in chennai. my work is control and relay panel auto cad designing.up to 11kv to 400kv then question is i am improving my knowledge. i want some books name and auther are available for this C&R panel related. plese any one help me

1357


whats the application of voltage regulation? and whats the voltage regulation's device?

1388






What are the major reasons for balancing hydro-thermal mix?

659


HOW TO SELECT THE COPPER CABLE SIZES OF MOTORS,TRANSFORMERS?

1534


My load is 1635 KW. & current pf is 0.884, I have to improve it for 0.99.Please suggest what KVAR value is needed?

1162


How to calculate no of EARTH PIT? Describe the formula as per IS standard?

3164


Can u tell me design of switch yard

1671


what is meaning of bus riser

1917


According to underground cables a) stress b/w sheath & conductor is high b) inrush of core & conductor

1493


Why air circuit breaker off due to power failure?

677


What are the raitings of Mcb,mccb and Acb in detail ??

1083


1. How many types of mangers? 2.How many types of capacitors? 3.pls tell me normally types alternator problems?

1688